Sizing Up Graphics Automatically

[Ben Ocean]

Hi;
Is it possible to automatically size up a graphic upon upload and 
programmatic insertion into a script? I use Zope and want to build a 
through-the-Web interface to enable my client to automatically change/add 
photos, but I want to set the site up such that all the dimensions of 
graphics, font sizes, etc., are resized depending on the visitor's browser 
resolution. In order to do that, I *must* somehow capture the dimensions of 
the uploaded graphic programmatically? Any ideas how to do this? Anybody 
have some code they'd like to share?
TIA,
BenO